I have 5 static IPs from Comcast through an SMC 8013WG cable modem. I need to route 4 of these IPs to static IPs on my LAN. What do I need in the way of hardware/software? One of the 5 WAN IPs goes directly to my mail server.
First, this is an IP question, not an ethernet question.
I usually use FreeBSD, or some other free unix-like system for a router. (A 486 is fast enough, though a pentium would probably be more reasonable these days.) I don't believe that most SOHO routers include this ability, though it isn't hard to do.
As I understand it the Linksys WRT54G is one that people use to load linux on, in which case it might be that you could do it.